Mayors are not directly elected, instead the respective regional government (of Brussels, Flanders and Wallonia) appoint one of the elected municipal councillors. The councillors usually propose a candidate.

The result in Wallonia was largely a continuation of the major parties, without any big power shifts. In Flanders however, the nationalist party N-VA, which won in previous regional and federal elections, continued their success and became (one of) the largest party in many municipalities and the largest in three out of five provinces.

National political parties are mostly separated by language community. A lot of municipalities have local parties as well as a presence of national parties. Here are the most important national parties:

In these municipalities, French-speaking parties are usually the largest ones, mostly PS and MR. FDF, previously forming a cartel with MR and also strong in Brussels municipalities, will now contend on its own, but dissidents from both former partners are contending on the other party's list, particularly in the municipalities where they are currently part of the majority coalition.

Dutch-speaking parties will in some municipalities form a cartel either with their French counterpart or in a larger "Mayor's List", as is the case this time between Ecolo and Groen! in all 19 municipalities, and with PS and SP.A in 17 out of 19. The only Dutch-speaking list with support from most Dutch-speaking parties is Samen (CD&V, Open VLD, SP.A and independents) in Auderghem. N-VA announced it will contend on its own in at least 10 out of the 19 municipalities.[2] 78 Dutch-speaking Dutch-speaking candidates were elected this time in the municipal councils.

The nationalist party N-VA became the largest party in the 2010 federal election. It was expected that the party would now achieve a number of seats in many Flemish municipalities, which was indeed the case. Local lists include cartels between two parties and independents, varying from one municipality to another, e.g. SP.A and CD&V in the city of Antwerp, but SP.A and Groen! in the districts of Antwerp and in Ghent, Open VLD and Groen! (and a splinter group from the CD&V) in Mechelen.

A lot of attention goes to the city of Antwerp, where Bart De Wever, the president of N-VA, wants to become mayor and put an end to decades of socialist mayors, the current one being Patrick Janssens (sp.a). Christian-democrat CD&V and socialist sp.a will form one list. Also Wouter Van Besien (president of Groen) is contending for the position of mayor, and Filip Dewinter of extreme-right Vlaams Belang is campaigning in Antwerp. According to a poll, N-VA would get 42,9% of the votes, giving 26 out of 55 seats in the municipal party, and 46,5% would like to see De Wever become the new mayor.[3]

Leuven has a similar situation where polls indicate that SP.A, the party of incumbent mayor Louis Tobback, would still be the largest. N-VA, CD&V and Groen follow after a gap.[5]

In Bruges, the incumbent mayor Patrick Moenaert (nl) (CD&V), who led a coalition of CD&V/N-VA, SP.A and VLD (which were all represented parties except Groen and VB), quits so all possibilities remain open. Polls give CD&V, SP.A and N-VA as major parties.[6]

In East Flanders, Flemish Brabant and especially Antwerp, N-VA became the largest party in the province, followed by CD&V. In Limburg and West Flanders, CD&V remained the biggest party followed by N-VA.

For the third time, non-Belgian EU residents may vote and be candidate for the municipal elections under the same conditions as Belgian residents, and for the second time non-Belgian non-EU residents may vote, but not be candidate, after 5 years residency. As voting is compulsory and Belgium may not impose voting on foreign residents, would-be voters from both categories have to fill a document and go to their municipal administration before August 1, 2012 to be included on the list of electors. Non-EU residents have to sign a document accepting to conform to Belgian laws and Constitution.[7] The percentage of foreign residents who are enlisted as electors has severely declined from 2006 to 2012: from 20.9% to 14.85% for EU residents, from 15.7% to 6.30% for non-EU residents (still including Bulgarians and Rumanians in 2006).[8]